weeks 4-6 Flashcards
What are the 3 most common clefts?
Cleft lip, cleft palate, cleft nasal deformities
What are some surgical techniques used to reinforce facial fractures?
mini plates, micro plates, titanium screws and absorbable implants
What is considered to be the ‘critical opening diameter’? (cm)
3 cm
What are the cranofacial clefts? (5)
naso-ocular, oro-ocular, oro-aural, mandibular, mid-line/paramidline clefts.
what does it mean by a cleft?
the lack of fusion between cranofacial bones and soft tissue.
For larger areas being treated with filler, what technique is used?
fanning or cross hatching
injecting collagen contains what type of collagen?
type 1 & 2
What type of collagen is the most resilient?
Bovine.
what % of people will develop an allergy to bovine?
3-10%
if you are allergic to bovine what other collagen can you have?
porcine.
what is the collagen suspended in?
saline with lidocaine
when is injected collagen usually degraded by?
6 months
What is hyalauronic acid indicated for?
giving facial volume
What are some contraindications for hyalauronic acid?
breast feeding pregnancy, inflammatory skin conditions or infections, around the eyes and clients prone to hypertrophic scaring.
Where is hyalauronic usually sourced from?
bacteria or avian sources
is Poly- L lactic acid considered semi permanent or permanent
semi permanent
what is calcium hydroxypatite indicated for use?
HIV suffers.
What type of filler is considered permanent and what response does the body have to it?
the PMMA microspheres, the body initiates a foreign body response to the material, encapsulating them with collagen fibers, which prevents the PMMA from migrating.
How long do PMMA fillers last for?
10+ years
what is a common complication of using silicone?
it can cause granulomas
is collagen temporary, semi permanent or permanent?
temp
is hyalauronic acid temporary, semi permanent or permanent?
temp
is Poly -L lactic acid temporary, semi permanent or permanent?
semi permanent
is PMMA temporary, semi permanent or permanent?
permanent
is silicone temporary, semi permanent or permanent?
permanent
is HEMA temporary, semi permanent or permanent?
permanent
what mechanism of action do the temporary fillers have?
replacement
what mechanism of action does Poly L lactic, calcium hydroxyapatite and HEMA have?
stimulatory
what mechanism of action do silicone and PMMA have?
foreign body encapsulation
